If you are registered, you get access to the members only section, can participate in the buy & sell second hand forum and last but not least you can reserve your preferred username before someone else takes it.
I am hunting a 4th type 35mm f2 M lens in black. I have had no luck with shops. If anyone has this lens for sale (ideally in London or the UK) I am very keen to buy, please contact me on vishal@vPhotographic.com
None of the Voigtlander lenses produced by Cosina cause problems with the AE function on M7 cameras. The only lens that I've found to cause problems are the Russian 35mm f/2. The old Zeiss biogon is also problematic, although I've never owned one ($10,000+).